diff --git a/android/build.gradle b/android/build.gradle
index 2cf230b..e9dadb6 100644
--- a/android/build.gradle
+++ b/android/build.gradle
@@ -28,6 +28,10 @@ apply plugin: 'kotlin-android'
 android {
     compileSdkVersion 33
 
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_17
+        targetCompatibility JavaVersion.VERSION_17
+    }
     defaultConfig {
         minSdkVersion 21
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
@@ -35,6 +39,8 @@ android {
     lintOptions {
         disable 'InvalidPackage'
     }
+
+    namespace 'com.flutter.moum.screenshot_callback'
 }
 
 dependencies {